Os-engines 21VZ-B V-Spec Manuel d'utilisateur

MAX-21VZ-B V-SpecOWNER'S INSTRUCTION MANUALIt is ofvital importance, before attempting tooperate your engine, to read the general'SAFETY INS

BEFORE STARTINGTools, accessories, etc.The following items arenecessary for operating the engine.Optional ExtrasT-2050 TUNED SILENCER ASSEMBLYThis is

LONG SOCKET WRENCH WITH PLUG GRIP REMINDER!Recommended for easy removal andreplacement of the angled and recessedglowplug, the O.S.Long Socket Wrenchi

STARTER BOXFor starting the engine.7.2V BATTERIES FOR STARTER BOXBatteries for starter box.Select according to thestarter box used. Be sure tofull cha

CARBURETOR CONTROLSCarburetor ReducerNeedle ValveMixture Control ValveAssembly ScrewThrottle StopScrewMetering NeedleThermo InsulatorFour adjustable c

GLOWPLUGSince the compatibility of glowplug and fuelmay have a marked effect on performance andreliability, it may be worthwhile to choose theR/C type

INSTALLATION OF THE STANDARD ACCESSORIESFitting the glow plug. Insert P3 plug suppliedinto heatsink-head carefully, making sure thatit is not cross-th

INSTALLATION OF THE CARBURETORAs delivered, the engine has its carburetor lightlyinstalled in the intake boss. Secure it as follows.1. Loosen the reta

STARTING THE ENGINE & RUNNING-IN ("Breaking-in")For long life and high performance, everyengine needs to be 'run-in' or '

Turn the needle-valve clockwise slowly untilit stops. This is the fully closed position.Do not force to turn further.Open the Needle-Valve 3 turns fro

Now connect glowplug battery lead to heatthe plug filament and start the engine.Attention:It is vitally important to set thethrottle at the correct po

CONTENTSSAFETY INSTRUCTIONS ANDWARNINGS ABOUT YOUR O.S. ENGINE - - - - 2-5ENGINE CONSTRUCTION---------------- 6NOTES WHEN APPLYING AN ELECTRICSTARTER

Run the car on the track until one tank of fuelhas been consumed, then close the Needle-Valve 30° and run the car for another fulltank of fuel. Repeat

FINAL ADJUSTMENTFinal adjustment should be carried out only afterthe running-in has been completed.Needle ValveNeedle ValveMore fuel Less fuelOpenOpen

With the engine running, close the throttleand allow it to idle for about five seconds,then reopen the throttle fully. If, at this point,the engine pu

Finally, beyond the nominal break-in period,a slight readjustment toward a leaner needlesetting may be required to maintainmaximum performance.CARBURE

CARE AND MAINTENANCE1.The minute particles of foreign matter, that arepresent in any fuel may, by accumulating andpartially obstructing fuel flow, cau

Fitting Dust CapsWhen storing the engine, fit it to exhaustport, carburetor, etc. to prevent dust enteringinside the engine.CHECKING THE ENGINEEngine

GUARANTEEThis engine is constructed from the very bestmaterials available and to the very highestengineering standards, using the most advancedprecisi

TROUBLE SHOOTINGFuel tank is empty.Fuel not reaching the engine.Fill the tank with fuel and repeatPriming procedure.Replace glowplug.Recharge or repla

Fit 0 rings to the tank screws toprevent bubbles.Do not disconnect plug battery and wait untilr.p.m. become stable.Too immediately disconnecting plug

Unsuitable glowplugUse suggested glowplug in the instructions.Do not use extremely high nitro or low oil fuel.Add suitable load.Install silencer secur

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINERemember that your engine is not a "toy", but a highly efficient internal-combustion

Incorrect carburetor fittingFit carburetor securely.Incorrect setting of transmitter Exponential function.Too much throttle opening at idling.Poor r.p

ENGINE EXPLODED VIEW1712365679C.M2.6X716151413121110C.M2.6X1884CM3X18*Type of screw C—Cap Screw M--0val Fillister-Head ScrewF-Flat Head Screw N-Round

ENGINE PARTS LISTNo.1 221050002 221051003 1237640104567891011121314151617Code No.221030102390600023817000237550002381805023715000239817002373100023751

CARBURETOR EXPLODED VIEW* Type of screwC. Cap Screw M Oval Fillister-Head ScrewF.FIat Head Screw N. Round Head Screw S.Set Screw32

CARBURETOR PARTS LISTNo.11-11-222-12-22-32-4345677-189101112Code No.2378160046066319227818002361819023618197460663192361819423818176715330102381850023

34O.S. GENUINE PARTS & ACCESSORIESGLOWPLUGP3 P6(71641300) (71641600)T-2050 EXHAUST HEADER PIPE ASSEMBLY(72106150)Exhaust Header Pipe(72106155)Head

The specifications are subject to alteration for improvement without notice.LONG SOCKET WRENCHWITH PLUG GRIP(715210001CRANKSHAFT CLAMP1521(71530200)DU

THREE VIEW DRAWINGSPECIFICATIONSDisplacementBoreStrokePractical R.P.M.Power outputWeight3.46cc(0.211cu.in.)16.6mm (0.654in.)16.0mm (0.630in.)3,000-40.

6-15 3-Chome Imagawa Higashisumiyoshi-kuOsaka 546-0003, Japan TEL. (06) 6702-0225FAX. (06) 6704-2722URL: http://www.os-engines.co.jp(C) Copyright 2004

WARNINGSModel engine fuel is poi-sonous. Do not allow it tocome into contact with theeyes or mouth. Always storeit in a clearly marked con-tainer and

NOTESThis engine is intended for model cars.Do not attempt to use it for any otherpurpose.Mount the engine in your modelsecurely, following the manufa

To stop the engine, fully retard thethrottle stick and trim lever on thetrans-mitter, or, in an emergency, cutoff the fuel supply by pinching the fuel

ENGINE CONSTRUCTIONWith this engine, the piston willfeel tight at the top of its stroke(TDC) when the engine is cold.This is normal. The cylinder bore

NOTES WHEN APPLYINGAN ELECTRIC STARTERDo not over-prime. This couldcause hydraulic lock and damagethe engine on application of theelectric starter.If

ABOUT THE ENGINEThe MAX-21 VZ-B V-Spec is a high per-formance 3.5cc class power unit for one-eight-scale radio-controlled 'off-road' or&apos